STANDLEY FLORA OF GLACIER PARK. 427 



11. Erigeron ramosus (Walt.) B. S. P. Daisy fleabane. Occasional on dry 

 brushy slopes or in waste ground at Belton. B. C. to N. S. and Fla.— Annual, 30 to 70 

 cm. high, branched, with slender stems; stem leaves linear, entire; heads numerous, 

 3 to 4 mm. high, with numerous white rays about 5 mm. long. 



Probably introduced here; a common weed in the eastern States. 



12. Erigeron philadelphicus L. Sandbar along creek at east entrance; only one 

 plant found. B. C. to Calif., Fla., and Lab.— Biennial, the stems slightly branched 

 above; lowest leaves oblanceolate, short-stalked; stem leaves clasping; heads 4 to 5 

 mm. high; rays pinkish, very numerous, 5 to 6 mm. long. 



13. Erigeron asper Nutt. Collected on hillsides at east entrance by Umbach. 

 Mont, and Alta. to N. Dak.— Stems 20 to 50 cm. high, very hairy; lower leaves linear- 

 oblanceolate, 3 to 10 cm. long, entire or somewhat toothed, hairy; heads 1 to 4, 5 to 7 

 mm. high; rays white or pink. 



14. Erigeron salsuginosus (Richards.) A. Gray. Showy fleabane. Plate 52, B. 

 Abundant above and just below timber line, in moist meadows or on rock slides; 

 sometimes found in moist places at middle altitudes, occasionally in woods. Alaska 

 to Calif., N. Mex., and Sask.— Stems 15 to 50 cm. high; lowest leaves oval, obovate, 

 or spatulate, 5 to 10 cm. long, glabrous or nearly so; heads about 1 cm. high, 1.5 to 2 

 cm. broad; rays broad, purple or pale purple. 



Our showiest species of Erigeron, often the most conspicuous and abundant plant 

 of high meadows. 



15. Erigeron conspicuus Eydb. Occasional at low altitudes on the east slope, 

 on open hillsides or in meadows. Wash, to Mont, and Colo.— Stems clustered, 

 25 to 50 cm. high, very hairy, densely leafy; stem leaves lanceolate, sessile, entire; 

 heads 8 mm. high, 1.5 to 2 cm. broad; rays narrow, purple. 



16. Erigeron speciosus DC. Frequent on the east slope at low altitudes, among 

 aspens, on open hillsides, or in low thickets. B. C. and Alta. to Colo, and Oreg.— 

 Stems clustered, 30 to 50 cm. high, glabrous or nearly so, very leafy; stem leaves 

 oblong or lanceolate, entire; heads 7 to 8 mm. high; rays narrow, purple. 



17. Erigeron macranthus Nutt. Frequent on the east slope at low and middle 

 altitudes, on open hillsides, in aspen woods, or along streams. B. C. to Oreg., 

 N. Mex., and Alta.— Stems clustered, 20 to 50 cm. high, glabrous or nearly so; stem 

 leaves ovate to linear-lanceolate, entire; heads 7 to 8 mm. high; rays narrow, bluish 

 purple. 



This and the last two preceding species are similar in general appearance. They 

 are showy plants but seldom occur in abundance. 



9. ANTENNARIA Gaertn. Pussytoes. 



Perennials, usually densely woolly, often with long or short runners; leaves 

 alternate, entire, usually forming rosettes; heads without ray flowers, in corymbs 

 or racemes, the pistillate and staminate flowers on separate plants; achenes with 

 copious pappus of white bristles.— The species are difficult to separate, and the 

 validity of many of them is uncertain. 

 Plants with erect stolons or with none. 



Heads 4 to 5 mm. high; bracts nearly glabrous, scarious throughout. 



1. A. luzuloides. 



Heads 6 to 10 mm. high; bracts very woolly below, only the tips scarious. 

 Bracts with a large dark spot; bracts of pistillate heads acute; plants 10 to 20 cm. 



high 2. A. lanata. 



Bracts with small or no dark spot; bracts of pistillate heads obtuse; plants usually 



30 to 40 cm. high 3. A. anaphaloides. 



